Thermochromism and temperature dependence of the energy gap in cadmium aluminum bismuthate glasses

Danping Chen, Yoshinari Miura, Tokuro Nanba, Akiyoshi Osaka

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Reversible thermochromic coloration was detected in BiO1.5-CdO-AlO1.5 system glasses. The relevant parameters were strongly dependent on the BiO1.5 content. It was suggested that the weakened and more polarized Bi-O bond due to increased BiO1.5 content enhanced the thermochromism of the glasses. The redshift of absorption edges at room temperature and the increase in the temperature coefficient of the shift with increasing BiO1.5 content were analyzed. The thermochromic mechanism was explained in terms of the temperature dependence of the optical energy gap caused mainly by electron-phonon interaction.

Original languageEnglish
Pages (from-to)79-83
Number of pages5
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Issue number2
Publication statusPublished - 1996



  • BiO-CdO-AlO glasses
  • Electron-phonon interaction
  • Nonconventional glass
  • Temperature dependence
  • Thermochromism

ASJC Scopus subject areas

  • Ceramics and Composites

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